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BaseRepresentation
bin11000110000011111011…
…00010101001010010000
310000022201102200001112121
430120033230111022100
5102414131200210411
61450442501504024
7115313213346232
oct14301754251220
93008642601477
10850666803856
112a8847263411
12118a46712014
13622a9c04a9c
142d25b46c252
15171db49d571
hexc60fb15290

850666803856 has 45 divisors (see below), whose sum is σ = 1707174757353. Its totient is φ = 410615083200.

The previous prime is 850666803851. The next prime is 850666803923. The reversal of 850666803856 is 658308666058.

The square root of 850666803856 is 922316.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 446069037456 + 404597766400 = 667884^2 + 636080^2 .

It is a super-2 number, since 2×8506668038562 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 850666803794 and 850666803803.

It is not an unprimeable number, because it can be changed into a prime (850666803851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 106984681 + ... + 106992631.

Almost surely, 2850666803856 is an apocalyptic number.

850666803856 is the 922316-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 850666803856

850666803856 is an abundant number, since it is smaller than the sum of its proper divisors (856507953497).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

850666803856 is an frugal number, since it uses more digits than its factorization.

850666803856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15968 (or 7982 counting only the distinct ones).

The product of its (nonzero) digits is 49766400, while the sum is 61.

The spelling of 850666803856 in words is "eight hundred fifty billion, six hundred sixty-six million, eight hundred three thousand, eight hundred fifty-six".